Since their second album, Led Zeppelin reign supreme in the rock. After a third album that saw the tackle folk and Celtic shores, this fourth album is a synthesis with strong and powerful tracks, Huge mastered paroxysmal pachydermisme (if it does mean something) and more acoustic tracks with strange harmonies and spellbinding. A great album without weakness, a classic rock and the tree "Staiway To Heaven", the damn song weddings, always excellent, however should not be the tree that hides the forest.